package com.example.ruiji.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.example.ruiji.common.CustomExcetion;
import com.example.ruiji.entity.Category;
import com.example.ruiji.entity.Dish;
import com.example.ruiji.entity.Setmeal;
import com.example.ruiji.mapper.CategroyMapper;
import com.example.ruiji.service.CategroyService;
import com.example.ruiji.service.DishService;
import com.example.ruiji.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CateroyServiceImpl extends ServiceImpl<CategroyMapper,Category> implements CategroyService{
    @Autowired
    private DishService dishService;
    @Autowired
    private SetmealService setmealService;
//根据id删除分类，删除执勤啊需要进行判断
    @Override
    public void remove(Long id) {
        LambdaQueryWrapper<Dish> dishLambdaQueryWrapper =new LambdaQueryWrapper<>();
        //添加查询条件，根据分类id进行查询
        dishLambdaQueryWrapper.eq(Dish::getCategoryId,id);
        long count = dishService.count(dishLambdaQueryWrapper);

        //查询当前分类是否关联了菜品，如果关联跑出业务异常
        if (count>0){
            throw new CustomExcetion("当前分类下关联了菜品，不能删除");
        }
        //查询当前分类是否关联了套餐，如果关联跑出业务异常
        LambdaQueryWrapper<Setmeal> setmealLambdaQueryWrapper =new LambdaQueryWrapper<>();
        setmealLambdaQueryWrapper.eq(Setmeal::getCategoryId,id);
        long count1 = setmealService.count();
        if (count1>0){
            throw new CustomExcetion("当前分类下关联了套餐，不能删除");
        }
        //没有关联删除
        super.removeById(id);
    }
}
